[PATCH V4 5/6] riscv: Enable gen_report() to print the wrong value in case of failure

[Andrew Jones]

On Wed, Mar 13, 2024 at 10:50:56PM +0100, cem at kernel.org wrote:
> From: Carlos Maiolino <cem at kernel.org>
> 
> If the test fails because the expected value doesn't match, it's
> useful to know what value was actually printed.
> 
> Signed-off-by: Carlos Maiolino <cmaiolino at redhat.com>
> Reviewed-by: Andrew Jones <ajones at ventanamicro.com>
> 
> ---
> V4:
> 	- Rebase on top of previous changes related to sbi probe extension
> 
>  riscv/sbi.c | 20 ++++++++++++++------
>  1 file changed, 14 insertions(+), 6 deletions(-)
> 
> diff --git a/riscv/sbi.c b/riscv/sbi.c
> index f33c19f4..043beb04 100644
> --- a/riscv/sbi.c
> +++ b/riscv/sbi.c
> @@ -29,10 +29,18 @@ static bool env_or_skip(const char *env)
>  	return true;
>  }
>  
> -static void gen_report(struct sbiret *ret, long expected)
> +static void gen_report(struct sbiret *ret,
> +		       long expected_error, long expected_value)
>  {
> -	report(!ret->error, "no sbi.error");
> -	report(ret->value == expected, "expected sbi.value");
> +	bool check_error = ret->error == expected_error;
> +	bool check_value = ret->value == expected_value;
> +
> +	if (!check_error || !check_value)
> +		report_info("expected (error: %ld, value: %ld), received: (error: %ld, value %ld)\n",

I dropped the '\n' while queuing this since report_info appends its own.

> +			    expected_error, expected_value, ret->error, ret->value);
> +
> +	report(check_error, "expected sbi.error");
> +	report(check_value, "expected sbi.value");
>  }
>  
>  static void check_base(void)
> @@ -46,21 +54,21 @@ static void check_base(void)
>  	if (env_or_skip("MVENDORID")) {
>  		expected = strtol(getenv("MVENDORID"), NULL, 0);
>  		ret = __base_sbi_ecall(SBI_EXT_BASE_GET_MVENDORID, 0);
> -		gen_report(&ret, expected);
> +		gen_report(&ret, 0, expected);
>  	}
>  	report_prefix_pop();
>  
>  	report_prefix_push("probe_ext");
>  	expected = getenv("PROBE_EXT") ? strtol(getenv("PROBE_EXT"), NULL, 0) : 1;
>  	ret = __base_sbi_ecall(SBI_EXT_BASE_PROBE_EXT, SBI_EXT_BASE);
> -	gen_report(&ret, expected);
> +	gen_report(&ret, 0, expected);
>  	report_prefix_pop();
>  
>  	report_prefix_push("marchid");
>  	if (env_or_skip("MARCHID")) {
>  		expected = strtol(getenv("MARCHID"), NULL, 0);
>  		ret = __base_sbi_ecall(SBI_EXT_BASE_GET_MARCHID, 0);
> -		gen_report(&ret, expected);
> +		gen_report(&ret, 0, expected);
>  	}
>  	report_prefix_pop();
>  
> -- 
> 2.44.0
>